- row
- The row number of the pixel.
- col
- The column number of the pixel.
Visual Basic (Declaration) | |
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Public Function RegionContains( _ ByVal row As Integer, _ ByVal col As Integer _ ) As Boolean |
Visual Basic (Usage) | Copy Code |
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Dim instance As RasterImage Dim row As Integer Dim col As Integer Dim value As Boolean value = instance.RegionContains(row, col) |
Parameters
- row
- The row number of the pixel.
- col
- The column number of the pixel.
Return Value
true if the specified pixel is in the region, otherwise; false.
Visual Basic | Copy Code |
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Public Sub RegionContainsExample() Dim codecs As RasterCodecs = New RasterCodecs() Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_RegionContains.bmp") ' Load the image Dim image As RasterImage = codecs.Load(srcFileName) ' Add an ellipse inside a rectangle region to the image Dim rc As LeadRect = New LeadRect(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3) image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set) ' Loop through the image and turn all pixels in the region to double intensity Dim y As Integer = 0 Do While y < image.Height Dim x As Integer = 0 Do While x < image.Width If image.RegionContains(y, x) Then Dim clr As RasterColor = image.GetPixelColor(y, x) clr = New RasterColor(clr.R * 2, clr.G * 2, clr.B * 2) image.SetPixelColor(y, x, clr) End If x += 1 Loop y += 1 Loop codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24) image.Dispose() codecs.Dispose() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | Copy Code |
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public void RegionContainsExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_RegionContains.bmp"); // Load the image RasterImage image = codecs.Load(srcFileName); // Add an ellipse inside a rectangle region to the image LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3); image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set); // Loop through the image and turn all pixels in the region to double intensity for(int y = 0; y < image.Height; y++) { for(int x = 0; x < image.Width; x++) { if(image.RegionContains(y, x)) { RasterColor clr = image.GetPixelColor(y, x); clr = new RasterColor(clr.R * 2, clr.G * 2, clr.B * 2); image.SetPixelColor(y, x, clr); } } } codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); image.Dispose(); codecs.Dispose(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | Copy Code |
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public void RegionContainsExample(Stream destStream) { // create a new image to work with RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0); // Add a rectangle region to the image LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3); image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set); // Loop through the image and turn all pixels in the region to double intensity for (int y = 0; y < image.Height; y++) { for (int x = 0; x < image.Width; x++) { if (image.RegionContains(y, x)) { RasterColor clr = image.GetPixelColor(y, x); clr = new RasterColor(clr.R * 2, clr.G * 2, clr.B * 2); image.SetPixelColor(y, x, clr); } } } RasterCodecs codecs = new RasterCodecs(); codecs.Save(image, destStream, RasterImageFormat.Bmp, 0); image.Dispose(); } |
SilverlightVB | Copy Code |
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Public Sub RegionContainsExample(ByVal destStream As Stream) ' create a new image to work with Dim image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0) ' Add a rectangle region to the image Dim rc As LeadRect = New LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3) image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set) ' Loop through the image and turn all pixels in the region to double intensity Dim y As Integer = 0 Do While y < image.Height Dim x As Integer = 0 Do While x < image.Width If image.RegionContains(y, x) Then Dim clr As RasterColor = image.GetPixelColor(y, x) clr = New RasterColor(clr.R * 2, clr.G * 2, clr.B * 2) image.SetPixelColor(y, x, clr) End If x += 1 Loop y += 1 Loop Dim codecs As RasterCodecs = New RasterCodecs() codecs.Save(image, destStream, RasterImageFormat.Bmp, 0) image.Dispose() End Sub |
This method uses image coordinates to specify the pixel. Therefore, you must account for the view perspective of the image.
For more information, refer to Working with the Existing Region.
Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7